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COMMITMENTS AND CONTINGENCIES, Legal Matters (Details) |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Feb. 05, 2021 USD ($) | Sep. 30, 2021 Claim Defendant shares | Mar. 16, 2021 shares | Mar. 15, 2021 shares | Dec. 31, 2020 shares
Legal Matters [Abstract] |  |  |  |  |
Certificate of incorporation to increase the authorized shares (in shares) | shares |  | 100,000,000 |  |  | 100,000,000
Novellus, Ltd. [Member] |  |  |  |  |
Legal Matters [Abstract] |  |  |  |  |
Defendants salary promised against plaintiff | $ | $ 500,000 |  |  |  |
Percentage of equity promised against plaintiff | 7.00% |  |  |  |
Novellus, Ltd. [Member] | Minimum [Member] |  |  |  |  |
Legal Matters [Abstract] |  |  |  |  |
Loss contingency, damages sought, value | $ | $ 10,000,000 |  |  |  |
NTN Buzztime, Inc [Member] |  |  |  |  |
Legal Matters [Abstract] |  |  |  |  |
Number of defendant | Defendant |  | 10 |  |  |
Number of claims filed | Claim |  | 2 |  |  |
NTN Buzztime, Inc [Member] | Robert Garfield [Member] |  |  |  |  |
Legal Matters [Abstract] |  |  |  |  |
Certificate of incorporation to increase the authorized shares (in shares) | shares |  |  | 100,000,000 | 15,000,000 |

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